Document Detail


Far-field R wave sensing causing prolongation of the atrial escape interval of DDD pacemakers with atrial-based lower rate timing.
MedLine Citation:
PMID:  14622327     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This report describes the occurrence of prolonged atrial escape intervals (AEI) initiated by sensing of ventricular premature complexes (VPC) without a preceding atrial depolarization or an AV delay in two patients with DDD pacemakers with an atrial-based lower rate response. The prolonged AEIs were due to ventriculoatrial cross-talk so that atrial sensing of the far-field R wave of the VPCs occurred before detection of the R wave by the ventricular channel as a near-field signal. Early atrial sensing of the far-field R wave was promoted by a high atrial sensitivity and/or low ventricular sensitivity and was eliminated by reducing atrial sensitivity and/or increasing ventricular sensitivity. This manifestation of far-field sensing should not be interpreted as malfunction of dual chamber pacemakers with atrial-based lower rate timing.
Authors:
S Serge Barold
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  26     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-19     Completed Date:  2004-03-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2188-91     Citation Subset:  IM    
Affiliation:
Tampa General Hospital, Tampa, Florida, USA. ssbarold@aol.com
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MeSH Terms
Descriptor/Qualifier:
Cardiac Pacing, Artificial / methods*
Electrocardiography
Heart Block / physiopathology,  therapy*
Humans
Sick Sinus Syndrome / physiopathology,  therapy*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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